The official new BattleDuel website can be found here.
Two players fight against each other with cannons placed in a windy mountainous landscape. To hit the other they change the powder and angle of the cannons. A duel is finished if one of the cannons is totally destroyed.
Today the Java version of BattleDuel received the rating "Top 25%" by the Java Applet Rating Service (www.jars.com) with a score of 810 (out of a possible 1000) points. Not too bad for a nearly ten year old game!

The fourth beta for Mac is available for download from the link below:
Some bugs were fixed, so an upgrade is recommended.
I've added some new ADOM screenshots for the different operating systems.